1. #1
    I have pneumatic cylinder on on milling machine tool changer that has a leaking internal seal. It works on the outward stroke but air exhausts out of the back valve on the return stroke.


    Does anyone know if I could replace the internal seal on this cylinder?


    If not does anyone have a spare lying around?


    The cylinder is a Joucomatic Isoclair 435 50 438 c 25 A 150 (P max 140psi)

  2. #2
    Chaz's Avatar
    Lives in Ickenham, West London, United Kingdom. Last Activity: 22 Hours Ago Has been a member for 4-5 years. Has a total post count of 973. Received thanks 69 times, giving thanks to others 42 times.
    Quote Originally Posted by jamesgates1000 View Post
    I have pneumatic cylinder on on milling machine tool changer that has a leaking internal seal. It works on the outward stroke but air exhausts out of the back valve on the return stroke.


    Does anyone know if I could replace the internal seal on this cylinder?


    If not does anyone have a spare lying around?


    The cylinder is a Joucomatic Isoclair 435 50 438 c 25 A 150 (P max 140psi)
    If you dont come right, I can point you to someone that can help. I bought a missing actuator for my Denford from these guys, were helpful and very good.

  3. #3
    Hi Chaz, thanks I have been quoted 70 delivered, was yours source any cheaper? Thanks

  4. #4
    Chaz's Avatar
    Lives in Ickenham, West London, United Kingdom. Last Activity: 22 Hours Ago Has been a member for 4-5 years. Has a total post count of 973. Received thanks 69 times, giving thanks to others 42 times.
    Quote Originally Posted by jamesgates1000 View Post
    Hi Chaz, thanks I have been quoted 70 delivered, was yours source any cheaper? Thanks
    This is what I paid. My actuator is not 'soft stopping', so doesnt have the adjustment at the end of the travel but still works none the less.

    1off - 25mm Bore x 160mm Stroke D/Acting Pneumatic Cylinder @ 40.39

    1off - 3 Station Solenoid Valve Manifold @ 24.71

    3off - 1/4"bsp 5/2 Solenoid/Spring Valve 110v c/w Led DinPlug @ 27.00 each

    (*The easiset option for the 3 way valve is to use a 5 way and blank one of the outlets)

    4off - 1/4"bsp x 6mm Straight Adaptor @ 0.65 each (Manifold Inlet & Vent / Outlet for 3 way Valve)

    4off - 1/4"bsp x 4mm Straight Adaptor @ 0.65 each (Outlets for 5 way Valves)

    4off - 1/4"bsp Blanking Plug @ 0.60 each (1off for 3 way valve / 3off for blanking one side of valve manifold)

    1off - Carriage @ 10.00

    Total @ 163.70 + Vat

    The supplier details are:-

    Shelley Automation Ltd
    Block One
    Nortonthorpe Mills
    Scissett
    Huddersfield
    HD8 9LA
    Tel: 01484 860920
    Fax: 01484 860672
    Email: Shelleyauto@aol.com

    VAT: 694 8526 78






  5. #5
    Thanks for the replies.
    Went to my local pneumatic supplier in Bristol(Harrier Pneumatics) and got a Parker PIA-5025MS-0150 as a direct replacement for 64.
    ATC is working fine now.

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